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Articles by Ernest Baafi
Total Records ( 2 ) for Ernest Baafi
  Bismark Abugri , Hugues Baimey , Yaw Danso , Kingsley Osei , Joseph Adomako , Umar Sanda Issa , Ernest Baafi , Bismark Abugri and Hugues Baimey
  Background and Objective: Cylas species infestation is a serious pest threat to sustainable sweetpotato production in Ghana. For integrated Cylas species management, exploiting the potential of entomopathogenic nematodes, noting and appreciating sweetpotato farmers’ production practices is essential. Sweetpotato production practices and Cylas spp. management options in some major growing areas of southern Ghana were assessed. Materials and Methods: Farmer-level structured questionnaire was designed, pretested and used to collect information from 270 respondents employing both qualitative and quantitative techniques. Results: Seventy-nine percent of the farmers cultivated local sweetpotato cultivars. Eighty-six percent practiced sole cropping while 47% managed their own planting material from the previous crop. Sixty-nine percent cited Cylas species as the most important sweetpotato pest. Ninety-seven percent responded positively to awareness of Cylas spp. infestations in sweetpotato production. Major Cylas species management options indicated by farmers were; insecticides application, early harvesting, earthing up, crop rotation and weed control in order of significance. Seventy percent (70%) did not manage Cylas species infestations in sweetpotato production. Conclusion: Cylas spp. management with synthetic farm insecticides must be discouraged on grounds of human and environmental health concerns. Biological control, which involves incorporating entomopathogenic nematodes should be encouraged in an integrated pest management system for environmental friendliness.
  Umar Sanda Issa , Kofi Frimpong-Anin , Yaw Danso , Ernest Baafi , Joseph Adomako , Patrick Obeng , Haruna Braimah , Kingsley Osei and Hugues Baimey
  Background and Objective: Sweetpotato is an important crop widely cultivated in many developing countries and insect pests are major production constraint. This study aimed to examine the response of different varieties to sweetpotato weevils (SPW) infestation under different ecological and cropping conditions. Materials and Methods: Ten sweetpotato plants were randomly harvested from each of 125 farms in 3 ecological zones. Leaves were examined for characteristic punctures, base of vines bisected for presence of tunnel and larvae and storage roots assessed for burrows. Results: Four sweetpotato weevils, Cylas puncticollis, Cylas formicarius, Cylas brunneus and Alcidodes spp. were identified with C. puncticollis as the pre-dominant species. Population density of SPWs and damage to foliage, vine base and storage root yield loss were significantly higher in transitional than savanna and semi-deciduous ecological zones. Local sweetpotato varieties did not show superior tolerance to SPW over improved varieties. The influence of cropping system on C. puncticollis was also not explicit. Conclusion: Sweetpotato in the transitional zone was more prone to SPW and driving factors must be further investigated. Local sweetpotato varieties did not exhibit higher tolerance to SPW over improved ones and therefore; increased adoption will enhance productivity and improve nutrition.
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